Ring positionable about a periphery of a contact pad, semiconductor device components including same, and methods for positioning the ring around a contact pad
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United States of America Patent
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Jun 7, 2005
Issued Date -
N/A
app pub date -
Jan 9, 2003
filing date -
Jun 8, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
Dielectric rings are configured to be disposed around contact pads on a surface of a semiconductor device or another substrate. The rings may be fabricated or otherwise disposed around the contact pads of a semiconductor device or other substrate before or after conductive structures, such as solder balls, are secured to the contact pads. Upon connecting the semiconductor device face-down to a higher level substrate and establishing electrical communication between contact pads of the semiconductor device and contacts pads of the substrate, the rings prevent the material of solder balls protruding from the semiconductor device from contacting regions of the surface of the semiconductor device that surround the contact pads thereof. The rings may be preformed structures or fabricated on the surface of the semiconductor device or other substrate. For example, stereolithographic techniques may be used to form the rings.
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